20883863

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{673}}^1$

素因数の和:735

約数の個数: 32

約数和(自身を含む): 28987392

約数和(自身を除く): 8103529

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 673, 1001, 2387, 2821, 4433, 4711, 7403, 8749, 20863, 31031, 51821, 61243, 96239, 146041, 229493, 271219, 673673, 1606451, 1898533, 2983409, 20883863]

約数ペア:

[(1, 20883863), (7, 2983409), (11, 1898533), (13, 1606451), (31, 673673), (77, 271219), (91, 229493), (143, 146041), (217, 96239), (341, 61243), (403, 51821), (673, 31031), (1001, 20863), (2387, 8749), (2821, 7403), (4433, 4711)]